Aeronautics and astronautics – Safety lowering devices – Parachutes
Patent
1975-06-23
1977-05-10
Blix, Trygve M.
Aeronautics and astronautics
Safety lowering devices
Parachutes
B64D 1734
Patent
active
040224066
ABSTRACT:
By providing a parachute canopy with a pull down vent line having predetened elastic properties, the inflation development time of the parachute can be automatically controlled commensurate with the parachute deployment airspeed. This construction will prevent the accidental development of an excessively deformed drag surface, especially at low air speeds, that can produce wide oscillations of the parachute, causing discomfort and possibly injury to the parachutist upon landing.
REFERENCES:
patent: 1378198 (1921-05-01), Smith
patent: 1519857 (1924-12-01), Lucas
patent: 2398795 (1946-04-01), Manson et al.
patent: 3721409 (1973-03-01), Matsuo et al.
Blix Trygve M.
Kelmachter Barry L.
Rubens G. J.
Sciascia R. S.
The United States of America as represented by the Secretary of
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